[media] radio-sf16fmi: clamp frequency

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2013-05-31 06:21:03 -03:00 коммит произвёл Mauro Carvalho Chehab
Родитель f90842d62b
Коммит 96bb42b8ab
1 изменённых файлов: 5 добавлений и 6 удалений

Просмотреть файл

@ -55,8 +55,8 @@ static struct fmi fmi_card;
static struct pnp_dev *dev; static struct pnp_dev *dev;
bool pnp_attached; bool pnp_attached;
#define RSF16_MINFREQ (87 * 16000) #define RSF16_MINFREQ (87U * 16000)
#define RSF16_MAXFREQ (108 * 16000) #define RSF16_MAXFREQ (108U * 16000)
#define FMI_BIT_TUN_CE (1 << 0) #define FMI_BIT_TUN_CE (1 << 0)
#define FMI_BIT_TUN_CLK (1 << 1) #define FMI_BIT_TUN_CLK (1 << 1)
@ -155,15 +155,14 @@ static int vidioc_s_frequency(struct file *file, void *priv,
const struct v4l2_frequency *f) const struct v4l2_frequency *f)
{ {
struct fmi *fmi = video_drvdata(file); struct fmi *fmi = video_drvdata(file);
unsigned freq = f->frequency;
if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
return -EINVAL; return -EINVAL;
if (f->frequency < RSF16_MINFREQ || clamp(freq, RSF16_MINFREQ, RSF16_MAXFREQ);
f->frequency > RSF16_MAXFREQ)
return -EINVAL;
/* rounding in steps of 800 to match the freq /* rounding in steps of 800 to match the freq
that will be used */ that will be used */
lm7000_set_freq((f->frequency / 800) * 800, fmi, fmi_set_pins); lm7000_set_freq((freq / 800) * 800, fmi, fmi_set_pins);
return 0; return 0;
} }